From: SIMON HART (simon.hart@btinternet.com)
Date: Wed May 25 2005 - 12:11:23 GMT-3
When mapping to an SVC, think of it in the same manner as a Dialer. Effectively the interface could call any nsap endpoint and establish an SVC via the ATM switch. Therefore when we attempt to map a distant end L3 address to the SVC, we need to tell the ATM switch which end point we wish to call, and thus which SVC to establish.
If you are used to ISDN, then you do not map the L3 address to the local ISDN number .... If you did you would end up calling yourself. Similarly for ATM.
HTH
Simon
netsteps@rediffmail.com wrote:
Hi Group
I have small question related to ATM SVC layer3 to layer2 mapping.
I was going through IE class on demand and came across the config of ATM SVC under which
1) we define the Layer3 ip address to the interface
2) we define our own layer2 NSAP address to the interface
and then
3)to do the mapping we Map the remote layer2 NSAP with remote Layer3 IP address.
I could not understand why we are mapping the remote layer3 address on remote layer2 NSAP address and not local NSAP address like we do for PVC ?
I hope I am clear.
Thanks
Amit Jain
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